Wladek
Well-Known Member
Some mechanical engine basics about smoke:
1. No smoke / smoke with white little cloud that fastly disappear & no smell - engine is healthy, some moisture in exhaust system (mostly colder days, or during weather change).
2. No smoke, just black exhaust tip & smell of fuel - mixture is too rich.
3. White smoke, cloud don't disappear fastly - coolant in block/combustion chamber: problem with cylinder head (crack on cylinder head or problem with cylinder head or block surface, eventually engine gasket, maybe cylinder head was not properly torqued). Coolant in reservoir is dark, different than usual coolant smell & also level might be higher than should be, or even might be over-leaks.
4. Blue smoke, typical toxic smell, cloud don't disappear fastly, oil consumption more than 1l for 1k km - oil in combustion chamber: valve stem seals are bad, valves shafts are worn or dirty; piston rings are worn or cylinder walls need to be re-honed, of course it also might be problem with pistons (corroded/burned etc.).
Blue smoke for a couple minutes, after engine wasn't runing for a couple weeks/months/or years due metal parts thermal expansion- is ok, but smoke should disappear after engine is warmed up.
As for me your engine (engine block & cylinder head) need a closer look made by engine specialist.
Faster you will do that - healthier your engine will be in future.
1. No smoke / smoke with white little cloud that fastly disappear & no smell - engine is healthy, some moisture in exhaust system (mostly colder days, or during weather change).
2. No smoke, just black exhaust tip & smell of fuel - mixture is too rich.
3. White smoke, cloud don't disappear fastly - coolant in block/combustion chamber: problem with cylinder head (crack on cylinder head or problem with cylinder head or block surface, eventually engine gasket, maybe cylinder head was not properly torqued). Coolant in reservoir is dark, different than usual coolant smell & also level might be higher than should be, or even might be over-leaks.
4. Blue smoke, typical toxic smell, cloud don't disappear fastly, oil consumption more than 1l for 1k km - oil in combustion chamber: valve stem seals are bad, valves shafts are worn or dirty; piston rings are worn or cylinder walls need to be re-honed, of course it also might be problem with pistons (corroded/burned etc.).
Blue smoke for a couple minutes, after engine wasn't runing for a couple weeks/months/or years due metal parts thermal expansion- is ok, but smoke should disappear after engine is warmed up.
As for me your engine (engine block & cylinder head) need a closer look made by engine specialist.
Faster you will do that - healthier your engine will be in future.
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